| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source operation controller provided with a function for preventing the fault of being exposed to laser beams radiated from an optical fiber end and high reliability based on the point of view of so-called fail-safe. SOLUTION: This light source operation controller for controlling the operation of a light source 31 for emitting light through optical fibers A21, 22 and 23 to a light receiving element 32 made to function by incident light is provided with a mechanism constituted of a pilot light source 1 and the photodetector 2 connected to the other optical fibers B14, 13, 15, 12 and 11 for at least inhibiting the light source 31 from emitting the light unless a photodetector 2 detects the incident light. |
